I've only found the volcano

Level 1:

The big flower will reveal the squee's purpose, if you can find it.

Level 2:

Have you been halfway up the ladder?

Level 3:

By the volcano, take the path towards the path to the floating
hut. Don't go on that path; keep going straight. Go up the ladder, but not all the way. About
halfway up, there is a ledge with a big flower on it. Climb in the flower. Hear anything?
If not, turn the game volume or your speakers up.